我想插入一个UITextField的文本。
这可能吗?
我想插入一个UITextField的文本。
这可能吗?
当前回答
@IBInspectable, @IBDesignable swift类怎么样?
@IBDesignable
class TextField: UITextField {
@IBInspectable var insetX: CGFloat = 6 {
didSet {
layoutIfNeeded()
}
}
@IBInspectable var insetY: CGFloat = 6 {
didSet {
layoutIfNeeded()
}
}
// placeholder position
override func textRectForBounds(bounds: CGRect) -> CGRect {
return CGRectInset(bounds , insetX , insetY)
}
// text position
override func editingRectForBounds(bounds: CGRect) -> CGRect {
return CGRectInset(bounds , insetX , insetY)
}
}
你会在你的故事板中看到这个。
更新- Swift 3
@IBDesignable
class TextField: UITextField {
@IBInspectable var insetX: CGFloat = 0
@IBInspectable var insetY: CGFloat = 0
// placeholder position
override func textRect(forBounds bounds: CGRect) -> CGRect {
return bounds.insetBy(dx: insetX, dy: insetY)
}
// text position
override func editingRect(forBounds bounds: CGRect) -> CGRect {
return bounds.insetBy(dx: insetX, dy: insetY)
}
}
其他回答
你必须子类化是荒谬的,因为UITextField已经实现了方法,就像@Adam Waite指出的那样。下面是一个快速扩展,它公开了一个工厂方法,也可以在我们的categories repo中使用:
private class InsetTextField: UITextField {
var insets: UIEdgeInsets
init(insets: UIEdgeInsets) {
self.insets = insets
super.init(frame: CGRectZero)
}
required init(coder aDecoder: NSCoder) {
fatalError("not intended for use from a NIB")
}
// placeholder position
override func textRectForBounds(bounds: CGRect) -> CGRect {
return super.textRectForBounds(UIEdgeInsetsInsetRect(bounds, insets))
}
// text position
override func editingRectForBounds(bounds: CGRect) -> CGRect {
return super.editingRectForBounds(UIEdgeInsetsInsetRect(bounds, insets))
}
}
extension UITextField {
class func textFieldWithInsets(insets: UIEdgeInsets) -> UITextField {
return InsetTextField(insets: insets)
}
}
对于那些正在寻找更简单解决方案的人来说。
在UIView中添加UITextField。为了模拟文本框周围的插入,我保持左10像素,宽度比视图小20像素。对于文本框周围的圆角边框,请使用视图的边框
viewBG.layer.cornerRadius = 8.0;
viewBG.layer.borderColor = [UIColor darkGrayColor].CGColor;
viewBG.layer.borderWidth = 1.0;
Swift 3 /可在界面构建器中设计/单独的水平和垂直昆虫/可用
@IBDesignable
class TextFieldWithPadding: UITextField {
@IBInspectable var horizontalInset: CGFloat = 0
@IBInspectable var verticalInset: CGFloat = 0
override func textRect(forBounds bounds: CGRect) -> CGRect {
return bounds.insetBy(dx: horizontalInset, dy: verticalInset)
}
override func editingRect(forBounds bounds: CGRect) -> CGRect {
return bounds.insetBy(dx: horizontalInset , dy: verticalInset)
}
override func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return bounds.insetBy(dx: horizontalInset, dy: verticalInset)
}
}
用法:
&
如果你有一个明确的按钮,接受的答案将不适合你。我们还应该警惕苹果在未来通过调用super来改变事情。
因此,为了确保文本不会与清除按钮重叠,让我们先从super中获取“默认”值,然后根据需要进行调整。
这段代码将在文本框的顶部、左侧和底部添加一个10px的insets:
@interface InsetTextField : UITextField
@end
@implementation InsetTextField
// Placeholder position
- (CGRect)textRectForBounds:(CGRect)bounds {
CGRect rect = [super textRectForBounds:bounds];
UIEdgeInsets insets = UIEdgeInsetsMake(10, 10, 10, 0);
return UIEdgeInsetsInsetRect(rect, insets);
}
// Text position
- (CGRect)editingRectForBounds:(CGRect)bounds {
CGRect rect = [super editingRectForBounds:bounds];
UIEdgeInsets insets = UIEdgeInsetsMake(10, 10, 10, 0);
return UIEdgeInsetsInsetRect(rect, insets);
}
// Clear button position
- (CGRect)clearButtonRectForBounds:(CGRect)bounds {
CGRect rect = [super clearButtonRectForBounds:bounds];
return CGRectOffset(rect, -5, 0);
}
@end
注意:UIEdgeInsetsMake接受参数的顺序是:上,左,下,右。
为UITextField添加填充的一个好方法是子类化UITextField并添加一个edgeInsets属性。然后设置edgeInsets和UITextField将相应地绘制。对于自定义的leftView或rightView集,这也能正确地发挥作用。
OSTextField.h
#import <UIKit/UIKit.h>
@interface OSTextField : UITextField
@property (nonatomic, assign) UIEdgeInsets edgeInsets;
@end
OSTextField.m
#import "OSTextField.h"
@implementation OSTextField
- (id)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
self.edgeInsets = UIEdgeInsetsMake(0, 0, 0, 0);
}
return self;
}
-(id)initWithCoder:(NSCoder *)aDecoder{
self = [super initWithCoder:aDecoder];
if(self){
self.edgeInsets = UIEdgeInsetsMake(0, 0, 0, 0);
}
return self;
}
- (CGRect)textRectForBounds:(CGRect)bounds {
return [super textRectForBounds:UIEdgeInsetsInsetRect(bounds, self.edgeInsets)];
}
- (CGRect)editingRectForBounds:(CGRect)bounds {
return [super editingRectForBounds:UIEdgeInsetsInsetRect(bounds, self.edgeInsets)];
}
@end